用霍耳-埃魯耳法生产金屬铝的实质是,将氧化鋁溶在熔融冰晶石(Na_3AlF_6)中,而后进行电解。阴极上析出的鋁,因比重較大,集聚在碳阴极槽底上,并同时起着阴极的作用。氧气在碳阳极上析出,它将碳氧化成二氧化碳。可见,阳极也是間接地参与氧化鋁的电化学还原反应。电解过程是在冰晶石-氧化鋁混合物的熔 The essence of metal aluminum production by the Hull-Erluk method is that aluminum oxide is dissolved in molten cryolite (Na3AlF6) and then electrolyzed. Cathodically precipitated aluminum, due to the larger proportion, gathered in the bottom of the carbon cathode tank, and at the same time plays a role in the cathode. Oxygen is precipitated on the carbon anode, which oxidizes the carbon to carbon dioxide. Can be seen that the anode is also indirectly involved in the electrochemical reduction of alumina. The electrolysis process is the melting of the cryolite-alumina mixture